New Lathe Part 2

**Oldneweng** · 31st December 2013, 07:44 PM

Continuation of

https://www.woodworkforums.com/f65/new-lathe-154840/

The latest update is there has been some action.

I decided to resurrect (sort of) this thread rather than continue in the motor thread.

A couple of quotes to set the scene.

My CY is 1500kg and I have no idea what sort of loader he has. They can move the old one cos if they drop it, its their problem. I will still have to get the CY out of the implement shed as it is 3m back, lined up front to back. No way to get hold of it. It will have to go back on the trailer. Maybe just get them to lift it and move it forward 10m or so to line up with the workshop door after I move ute/trailer (at right angles) forward to make room. Should be room now it has been cleaned up.

The CY is sitting up about 60cm off the ground on wooden blocks. Back the trailer in and roll it on. Easy!

I have been working on finding a new location for the shaper bits for painting as they are in front of the CY. I am going to park them next to the car in the carport. Lucky it is almost a 2 car one.

Dean

I have been intending to remove the motor for the last couple of days but have not managed to get there yet. I have moved all the paintable shaper pieces as I said so it is now an easy job to clear the rest of the stuff for moving the lathe. I have also got the shed within minutes instead of hours for machine movement. I am ready to call in the troops.

Dean

Well the troops have been and I have to say I am very happy at the outcome.

Shed Ex Nuttall.jpg

This is my workshop. Right down the back is where the Nuttall lathe used to reside along the end wall under the window. Last seen disappearing in the back of a 5 tonne tip truck. There were discussions going on as to whether the lathe could be tipped out at the end of the trip, about 10km. I talked D into leaving the loader here and he is going to come back tomorrow to do a couple of little jobs with it!

This loader still has the bucket on. The forks are attached to brackets welded in the back of the bucket. They just rest on the front edge of the bucket. It is normally used for firewood collection.

CY Lathe Outside Workshop.jpg

This is the CY lathe sitting just outside the door to my workshop, ready to be rolled into its temporary home while I work on the concrete base. Then it will just need to be rolled straight back. Looking at the first picture again you will see 2 cracks in the concrete in the centre strip. There is a live root root pushing up somewhere to the left of the red jack sitting on the floor. This root is not doing the floor any favours. From the rear wall to about the second crack will be removed and replaced with a much thicker slab. The instruction manual for this lathe (Thanks to Will Bleeker) says to pour a slab 400mm thick to install the lathe on. As can be seen the lathe is mounted on a timber sled with steel 100mm shs spacers and more timber below. Remove the steel spacers and replace with pipe rollers, lay out more timber to extend the floor so to speak and roll the lathe into the shed in the front section to leave room for concrete works.

I had made it clear to D (Lets call him Don cos that's his name) that moving this lathe from it resting place was not going to be an easy task. So it turned out. It took a couple of hours of maneuvering to get it out of the implement shed far enough to pick it up properly. I was concerned about Don's attitude in doing this as he tends towards the "bull in a china shop method" but his friend Ken who owns the Nuttall now, is a steadying influence. He is relatively smart at this sort of thing and understood the problems with moving a lathe. He is also proficient at telling Don what to do and how to do it. Yes I do mean what it sounds like. All went well tho and I have retired for the evening a tired but happy metalworker.

Checking the forecast and we are now looking at a 90% chance of 10 - 20mm. Last weekend it was a 90% chance of 20 - 40mm but was downgraded to 5 - 10mm. May need to get it under cover early.

There is also a possibility of getting an electrician to connect up the wiring for the lathe. Ex boyfriend of a daughter of Don's or something like that. I will need to get the cable laid. I also want to lay insulation in the house while I am doing this. May as well when the roof sheets are off.

Dean

**Oldneweng** · 4th January 2014, 10:37 PM

The Cy has nearly made it to its final resting place.

Nearly Home 2.jpg

The arrow points to where it will go when the concrete is laid.

Dean

**pipeclay** · 5th January 2014, 12:30 AM

That's nice.

**Oldneweng** · 21st April 2014, 07:36 PM

I have finally got my Lathe running with the VFD. As mentioned in another thread, I have been lining my shed. I have finished one section. To do this I moved a 2400mm long shelf unit and a 900mm wide steel cabinet out from the wall to allow access for the lining. The steel cabinet was hard up against the back of the lathe. This prevented me from having access to the rear of the lathe and the rear motor adjustment studs. On Friday I put the units back against the wall. They were heavy. Yesterday I levelled and adjusted the height of the motor plate and tightened the motor down. Today I connected the VFD temporarily and tested the lathe. I have worked 9hrs today and yesterday, and went to visit the grandkids on Saturday, which is why it has taken this long on the weekend.

I tested the RPM at all gear speeds, but only at 50Hz at this stage. This provides speeds from 33rpm up to 1000rpm. The speed as reported by the digital tacho that I bought recently for this very reason, was from 104% to 111% higher than the speed on the lathe plate. At this stage I am happy with the result. I do not know about the power aspect tho, but it did not seem to have any issues with coming up to speed, although it had a reasonable ramp up time. I have not changed this yet.

Dean

**BobL** · 22nd April 2014, 06:56 AM

Good to hear it's working Dean.

Post a pic of the setup when you get a chance.

**Oldneweng** · 22nd April 2014, 08:46 PM

Originally Posted by BobL

Good to hear it's working Dean.

Post a pic of the setup when you get a chance.

I will do that Bob, but the lathe has not moved from the position in the picture above, and I am only connecting the VFD via a standard GPO at the moment. Latest intel suggests that I will be on 12hr shifts for at least another month. Great for the money side, but not so good for getting stuff done. I will then probably have to cut and split a heap of firewood for the winter.

I do need to start working out a control panel for the VFD.

Dean

**Bryan** · 22nd April 2014, 09:33 PM

Glad you're making progress Dean. At least lots of work will help pay for concrete. How's the schedule on that BTW?

**Oldneweng** · 23rd April 2014, 11:34 AM

That is a good question. It is still in the same state as in the picture above. I did have a look at it after getting the lathe spinning. I will try to do a bit of scratching at the hole when i have time. There is at least one big root to be dealt with. Guess why the concrete is so uneven. It will take a bit of playing to get the right level. Hopefully the wall frames have not moved too much. A job for the laser level.

Dean

**Oldneweng** · 15th May 2014, 11:48 AM

An update on my progress.

Control Box Temp.jpg

This is the housing for the VFD. Ammeter at bottom left, speed control above it, centre. The control panel for the VFD in the middle and digital thermometer just resting on top of it. On the side of the housing is the mains power switch, forward/reverse switches and stop/Estop at the bottom. This housing sits on top of the electrical cabinet. If you look at the picture in post #2, it takes the place of the orange enclosure. The Estop has been moved as shown above.

I am waiting for some switches and a knob to be delivered.

This is only a temporary arrangement. I want to have a bigger housing, which has room to fit all controls shown. I have looked on the net, but at the size required they seem to be rather expensive. I will keep looking, but I might finish up making one.

Root Pile.jpg

This is the pile of roots I have dug out of the hole for the lathe slab. Most of these were from a poplar tree (spreading variety) which was cut down a couple of years ago. Luckily they are now dry and brittle. The root that extends out of the left of the picture is from a live ash tree. It is over 3m long. I dug up and cut what I thought to be the source of this root outside the shed. A root about 125mm diam. I have cut a section out and poisoned the outer root face.

Dean

**morrisman** · 15th May 2014, 11:57 AM

Looks neat . What is the thermometer there for ? Mike

**Oldneweng** · 15th May 2014, 04:26 PM

Originally Posted by morrisman

Looks neat . What is the thermometer there for ? Mike

Hmmm. Different thread. In my https://www.woodworkforums.com/showth...=184664&page=2 thread I mentioned that the enclosure for the VFD is not quite as big as recommended in the manual. It is intended as a precaution against overheating, I hope. At least until I can come up with a bigger unit anyway.

Looks neat . What is the thermometer there for ? Mike

Neat is not what I would call it. Workable maybe.

On another note the switches and a 12v 6w LED globe turned up in the mail today.

I have installed a 12v 600mA power pack to run the light from. The existing globe is 24v. LED seemed like the way to go. It is a G4 fitting and should slip right in. The power pack was one I had lying around that I collected along the way. Probably from defunct lab equipment. It had a 3 pin connector and cord like a kettle/computer so was easy to connect.

I have just ordered 2, 240v indicators for power and coolant pump in green and red. The existing ones are 6v and as I am no longer using contactors, I did not want to mess around with relays. I can get along without them for now. They are coming from Victoria, so they should not take too long.

The wiring is now complete except for the new stuff.

Dean

**Oldneweng** · 16th May 2014, 07:16 PM

Ok, so I missed a couple of things with the wiring. Like the motor wires. Sorted now.

I have the essential stuff connected and have given it a test run. It works. The rotation is reversed and the speed control is reversed, but that is a simple fix. I still have to fit the new 10k pot anyway. The 100k is lacking a bit of sensitivity, but it does work. I am used to using these controls at work. A lot of our pumps have VFD's and external controls. The positive displacement (helix) pumps and one centrifugal pump, have the controls on an extension cord.

Stops work with ramp down at the moment until I sort out the EStop properly. A test run at 100Hz gave a speed of 1330rpm in a gear that should give 650rpm. Looks good to me.

Now I have to get to work on the slab.

Dean

**Oldneweng** · 18th May 2014, 03:40 PM

The drive motor has been adjusted back as far as it will go, from the pulley end. It is hitting the end of the motor cavity under the headstock. A check with a straight edge shows that it is still sitting out about 6mm too far.

The approximate measurements for the pulleys.

Drive 130mm
Driven 220mm
Distance between pulley centres 650mm
Belt 3 x A1892

It seems like it has always been like this, although the driven pulley was loose when I got it. It is held on with a slotted nut and tabbed washer. There is not enough shaft length to shift this pulley out 6mm. The belts are in perfect condition.

How close should I get the pulley alignment. This seems a bit much for me.

There may be enough room to move the motor fan shroud in a bit to allow more clearance. I will have to pull the motor partly out to do this. I will have to drill new holes in the shroud. It is a steel shroud.

Any comments will be welcome.

Dean

**Oldneweng** · 25th May 2014, 09:23 PM

The thread cutting chart shows the use of a 28 tooth gear, which is on the lathe, plus a 44 tooth gear which is missing. As this is the only thing that I have found missing, I think I am fortunate.

I saw Michael G today (to drop off a bottle of red. I hope he enjoys it) when in Adelaide for a family visit post vintage, and my mum's birthday dinner. I mentioned the lack of this gear and he offered to make it. I said it was not an urgent project.

As I am unable to post the picture in a PM, via my usual methods I said I would post it here.

28 Tooth Gear Threading.jpg

The text for the PM. (Waste of time doing a PM)

I can't post a picture in a PM using my normal methods so I will post it in the "New Lathe" thread. The gear is shown reversed on the shaft to show details. It has a close tolerance fit. I cannot remove it without levering it off. It may be better to use an adjustable reamer, testing for size in situ. It is drives via a pin and is held on with a nut/washer.

The following measurements have been taken.

28 Tooth Gear Diameter 45.06mm
Gear Thickness 10mm
Shaft that gear sits on Diam 25.00mm
Drive pin 3.99 (?) (0.157 in)Diam
14.35 long. (I will provide this of course)
Drive pin hole 15.5mm from centre of gear. (I have a centre finder on its way so I can drill this hole.)

Cheers

Dean

**Michael G** · 25th May 2014, 10:32 PM

I think the red will slide down very nicely thanks Dean.
Thanks to for promoting the idea that forum members are kind considerate people with the other half. It all helps!

The measurements you've posted are odd - something is not quite adding up however, we can sort this.
(On edit - in the list of measurements it should be 28t not 22t)

Michael

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